Results 81 to 90 of about 53,190 (206)

Utilization of fumarate by sulfur-reducing bacteria Desulfuromonas sp.

Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Ekologìâ, 2016
The main goal of the work was to study the utilization of fumarate by sulfur-reducing bacteria Desulfuromonas sp. under different growth conditions and accumulation of hydrogen sulfide by bacteria in the media with sulfur and different electron donors ...
O. Сhayka, T. Peretjatko, S. Gudz, A. Halushka   +3 more
doaj   +1 more source

The chemistry of the Vasa [PDF]

, 2008
Analyses of wood from the Swedish warship Vasa revealed a complex chemical composition with increased acidity and depolymerisation of hemicellulose and polyethylene glycol (PEG).
Almkvist, Gunnar
core  

Fire and brimstone: the microbially mediated formation of elemental sulfur nodules from an isotope and major element study in the paleo-Dead Sea.

PLoS ONE, 2013
We present coupled sulfur and oxygen isotope data from sulfur nodules and surrounding gypsum, as well as iron and manganese concentration data, from the Lisan Formation near the Dead Sea (Israel).
Tom Bishop, Alexandra V Turchyn, Orit Sivan   +2 more
doaj   +1 more source

Sulfurization of H-Phosphonate Diesters by Elemental Sulfur under Aqueous Conditions [PDF]

ACS Omega, 2017
To assess the plausibility of prebiotic nucleic acid polymerization by a sequential phosphitylation-sulfurization mechanism, the rates of hydrolysis and sulfurization of bis(2',3'-O-methyleneadenosin-5'-yl)-H-phosphonate, a dinucleoside H-phosphonate diester, have been determined over a wide pH range (0.52-7.25) and in the presence of varying amounts ...
openaire   +3 more sources

Fate of elemental sulfur in an intertidal sediment [PDF]

, 1996
Sediment from a tidal flat at Wedderwarden, near the mouth of the Weser estuary, northern Germany, was amended with elemental sulfur, and concentrations of metabolic end products were monitored.
Thamdrup, Bo, Canfield, D., Thamdrup, B., Canfield, Donald Eugene; id_orcid   +3 more
core   +1 more source

Reaction of Elemental Sulfur and Mercaptobenzothiazole [PDF]

, 1956
One of the most important problems in the field of the physics and chemistry of rubber is that of vulcanization. Until now no single theory has been established, which elucidates the complex physico-chemical changes which occur during this process. Still
G. A. Blokh, E. A. Golubkova, G. P. Miklukhin   +2 more
core   +1 more source

The Influence of the Comonomer Ratio and Reaction Temperature on the Mechanical, Thermal, and Morphological Properties of Lignin Oil–Sulfur Composites

Molecules
Although lignin is a plentiful biomass resource, it continually exists as an underutilized component of biomass material. Elemental sulfur is another abundant yet underutilized commodity produced as a by-product resulting from the refining of fossil ...
Katelyn A. Tisdale, Nawoda L. Kapuge Dona, Rhett C. Smith   +2 more
doaj   +1 more source

Electrophilic fluorination methodology [PDF]

, 2002
Chapter One This chapter reviews the historical background of the fluorination using both elemental fluorine and N-F reagents. It relates the properties and preparations of these electrophilic reagents.
Thomas, Emmanuelle Maitrise de Chimie
core  

Sulfur-Promoted DABCO-Catalyzed Oxidative Trimerization of Phenylacetonitriles [PDF]

, 2019
By simply heating phenylacetonitriles 1 with elemental sulfur and DMSO in the presence of a catalytic amount of DABCO, we have performed an oxidative trimerization leading to polysubstituted pyrrole heterocycles 2 in excellent yields and the E ...
Retailleau, Pascal,, Nguyen, Thanh Binh,, Thanh Binh Nguyen, Thanh Binh Nguyen (1508308), Nguyen, T .B., Retailleau, Pascal, ́, Pascal Retailleau (1445848), Pascal Retailleau   +7 more
core   +1 more source

Adsorption Mechanism of Elemental Sulfur in High-Sulfur Gas Reservoirs Based on Molecular Simulation and Monte Carlo Methods

Energies
Elemental sulfur deposition in sulfur-bearing gas fields can disrupt gas well production and create safety risks, making it essential to understand its deposition mechanisms.
Mingdi Zhang, Guangdong Zhang, Xuejing Weng, Qi Feng   +3 more
doaj   +1 more source